title: Retrospective review of angiography before cannulation of newly created vascular accesses in hemodialysis patients.
abstract: OBJECTIVE
  To investigate vascular access status before first cannulation and the clinical implications of angiography performed before cannulation.
  
  
  METHODS
  A retrospective review of 300 consecutive patients who underwent angiography after vascular access surgery and before cannulation between August 2004 and April 2010 was performed. Angiography was performed 4-6 weeks after the surgery but before the first cannulation.
  
  
  RESULTS
  Angiography revealed 94 (31.3%) cases of severe stenosis (≥ 50% luminal narrowing) that required percutaneous transluminal angioplasty (PTA) or a second operation. No stenosis was observed in 122 (40.7%) cases, and mild stenosis (< 50% luminal narrowing) was observed in 84 (28%) cases. For the 94 cases with severe stenosis, PTA was performed in 66, and a second operation was performed in 16. In the other cases (n = 12), HD was maintained by a permanent catheter, or the patients were transferred to another institution. PTA was an immediate success in all patients who underwent the procedure except two. Of 84 patients with mild stenosis, 70 were followed for 1 year; vascular access dysfunction occurred in 15, and 11 of these underwent successful PTA. Of the 122 patients with normal angiographic findings, 102 were followed for 1 year, and vascular access dysfunction did not occur in any of these patients.
  
  
  CONCLUSIONS
  Early postoperative angiography before the first hemodialysis is helpful for the early detection and treatment of vascular access dysfunction.
authors.affiliation: Division of Nephrology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1, Geumo-dong, Uijeongbu-city, Gyeonggi-do, Korea.
authors.forename: Jayoung
authors.initials: J
authors.lastname: Lee
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Kim
authors.forename: Sun Ae
authors.initials: SA
authors.lastname: Yoon
authors.forename: Yong Soo
authors.initials: YS
authors.lastname: Kim
authors.forename: Yoo Dong
authors.initials: YD
authors.lastname: Won
authors.forename: Sun Cheol
authors.initials: SC
authors.lastname: Park
authors.forename: Eun Joung
authors.initials: EJ
authors.lastname: Jang
authors.forename: Young Ok
authors.initials: YO
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000706:statistics & numerical data*; D001166:Arteriovenous Shunt, Surgical / Q000401:mortality*; D002404:Catheterization / Q000401:mortality*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000401:mortality; D015995:Prevalence; D015641:Radiography, Interventional / Q000706:statistics & numerical data; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging* / Q000401:mortality* / Q000517:prevention & control; D006435:Renal Dialysis / Q000401:mortality*; D056910:Republic of Korea / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate; D016896:Treatment Outcome; D062666:Vascular Access Devices / Q000706:statistics & numerical data*
keywords: AVF; AVG; HD; arteriovenous fistula; arteriovenous graft; hemodialysis